All products are quality checked. We will be happy to resolve any issues you may have in a cordial and friendly manner. We appreciate your Postive Feedback, and will do the same in return. The item "JUNTEK DPA-2698 10MHz 25Vpp 2CH DC Power Amplifier DDS Function signal Generator" is in sale since Tuesday, December 18, 2018. This item is in the category "Consumer Electronics\Radio Communication\Other Radio Communication".The seller is "power116" and is located in ShenZhen ,Guangdong. This item can be shipped worldwide.